Carbon preparation material based on coke modification and sulphur-applying activated char, and production process thereof

Abstract

The invention relates to carbon preparation material and sulfuric active carbon based on the modification of coke and a preparation method thereof. The invention adopts the scheme that the preparation method comprises the following steps: dipping the coke in KOG solution for 1 to 24 hours at the temperature of 20 to 100 DEG C, wherein the mass ratio of KOH and the coke is 0.05 to 0.5:1; carrying out heat treatment to the coke after being dipped for 1 to 5 hours under the condition of inert atmosphere and 300 to 700 DEG C; then cooling the coke to the room temperature; and finally preparing the carbon preparation material after the coke is washed and dried. The carbon preparation material prepared can react for 1 to 5 hours under the conditions that the mass ratio of active gas flow rate and the carbon preparation material is 5 to 30:1 L/min/kg and the temperature is 350 to 850 DEG C, so as to prepare the sulfuric active carbon. The invention has the advantages of saved alkali consumption and energy consumption, shortened activating treatment time, high yield, and reduced corrosion resistant requirements of the material; the prepared carbon preparation material has high reaction activation; and the sulfuric active carbon prepared by the carbon preparation material has larger specific surface area and high sulphur content, and exits in a straight chain sulfuric shape as the subject of S2 and S6.

Description

Technical field [0001] The invention belongs to the technical field of activated carbon. Specifically, it relates to a charcoal preparation material based on coke modification, sulfur-enriched activated carbon and a preparation method thereof. technical background [0002] Many coke resources are rare raw materials for the production of activated carbon. my country is the world's largest country in metallurgical coke production. It has extremely rich powder coke resources. Due to the high content of fixed carbon, it is an excellent raw material for the production of activated carbon. In the petroleum industry, most petroleum coke at home and abroad has a high sulfur content and cannot be used as fuel. For example, the Canadian Syncrude Petroleum Company's petroleum fluidized coke has a daily output of more than 10,000 tons, with a sulfur content of about 6-8%, a carbon content of >85%, and ash content. <3%, as waste is piled up into mountains, it is also inexhaustible and i...

AI Technical Summary

Problems solved by technology

The biggest disadvantage of the above method is that the reaction time is too long, the specific surface area of ​​the activated carbon produced is very small, and the yield of activated carbon is low, and the energy consumption is very large

However, due to the large alkali consumption, the yield of activated carbon is not high, and the preparation cost is very high

In addition, due to the severe corrosion of the system caused by potassium alkali, there are many problems in the realization of large-scale production engineering, especially the high requirements for corrosion resistance of equipment materials, making it difficult to industrialize